Glass bottle is a traditional beverage packaging container in China, and glass is also a kind of packaging material with history. In the case of a variety of packaging materials into the market, glass container still occupies an important position in beverage packaging, which is inseparable from its packaging characteristics which can not be replaced by other packaging materials.
As a packaging material, glass bottles are mainly used in food, oil, wine, beverage, condiment, cosmetics and liquid chemical products. The main characteristics of glass bottles are: non toxic, tasteless; transparent, beautiful, good barrier, airtight, rich and common raw materials, low price, and can be used repeatedly. Glass bottles have the advantages of heat resistance, pressure resistance and cleaning resistance, which can be sterilized at high temperature and stored at low temperature. But glass bottle also has its disadvantages, such as heavy weight, high cost of transportation and storage, shock resistance and so on. The main raw materials of glass bottle are natural ore, quartz stone, caustic soda, limestone, etc. Glass bottles have high transparency and corrosion resistance, and will not change the material properties when contacting with most chemicals.
The glass bottle has the advantages of simple manufacturing process, free and changeable shape, high hardness, heat resistance, clean, easy cleaning, and can be used repeatedly. First, the mold should be designed and manufactured. The raw material of glass bottle is quartz sand, and other auxiliary materials melt into liquid state at high temperature. Then the essential oil bottle is injected into the mold, cooled, cut and tempered to form the glass bottle. Glass bottles generally have a rigid mark, which is also made of mold shape. According to the manufacturing methods, glass bottles can be divided into manual blowing, mechanical blowing and extrusion molding.